Malicious PDF — malware analysis report

Static analysis result for SHA-256 eecd26c11eeba399…

MALICIOUS

PDF

69.4 KB Created: 2020-11-11 22:04:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 83b80d591ecd5bd01c5b1762e3e97072 SHA-1: 22ae775b5989e6d30b5f175085a3e98ed8316ebf SHA-256: eecd26c11eeba39908d1faf1bf0ee33edd53b6ebb72c005a07e5d12ff7df8b46
214 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file contains numerous links to external websites, masquerading as a resource for movie downloads. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' indicates that at least one of these links directs to known malicious infrastructure. The ML classifier and ClamAV detection further support its malicious nature, classifying it as a phishing or trojan PDF. No scripts were extracted, but the primary attack vector appears to be directing users to malicious URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://gettraff.ru/aws?utm_term=life+after+death+telugu+movie+free In PDF document text
    • https://cdn-cms.f-static.net/uploads/4415080/normal_5fa0d478879c4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469359/normal_5fa9ce845a9bf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369927/normal_5f8c0fb48e1b0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409801/normal_5fa661671f987.pdfIn PDF document text
    • https://vunixumo.weebly.com/uploads/1/3/1/4/131453253/nekaxem.pdfIn PDF document text
    • https://juwememuju.weebly.com/uploads/1/3/4/5/134523402/wekavod-dobizuno.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/d67729af-2fc7-4e52-a732-87c043275b30/kenmore_heavy_duty_70_series_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/34bf7438-561f-4173-96e3-1f109f897c30/vojamamapejabapip.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c2c7f689-48f4-4869-975f-67343777f1ce/62503186226.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/93a66899-eba6-4bcf-aad7-303f8d9f7230/horus_heresy_book_7_inferno.pdfIn PDF document text
    • https://s3.amazonaws.com/votuweroxigezog/pdf_file_to_excel_converter_free_download_online.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/92b0f7de-2ad8-4909-84a9-70654456156c/fuvonelamudewinipobam.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d41f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD41F 5144 bytes
SHA-256: 3b8f9e4f937fb7b6f08042f00d0ac4f8c1b647f0ef053a2752162eea2b4cd72b
font_01_sfnt_off0000e583.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE583 10232 bytes
SHA-256: 7f8ef89cf9b8d869c59a089007fd5895db55ffe464bfd354063d23a3e03280a7

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